You've got a good set of weapons for dealing with most of what chaos has to offer - some people might suggest plasma for dealing with marines, and it'd do you well going into Terminators or Obliterators, but the missile pods are strictly better than plasma against basically every demon unit. One glaring flaw I see, however, is no Skyfire in your army. Chaos Marines, in particular have two really powerful flyers - the flying Daemon Prince and the Helldrake, both of which can make your suits seriously unhappy for different reasons. Unfortunately it's going to be real hard to find the points to put in Velocity Trackers, so you'll have to judge for yourself if it's worth it against the types of players you see.

Some other things I see off the top of my head:

1.You want your Commander to have 2x MP instead of one twin-linked. He's got BS5, and you want to use that with as many shots as possible.

2.Consider splitting the Fusion suits into 3 single-suit units. You can save points by not taking the Vectored Retros. That allows you to target different models on different sides of the board, and also lets you contest multiple objectives, because they are objective secured.

3.If you drop the Retrothrusters and downgrade the missile suits to just 2x Missile Pod, you can upgrade the Fusion suits to 2x Fusion Blasters. It's a pretty big jump in firepower.

4.The Broadsides are probably the best option for holding those Velocity Trackers, if you think you'll face air. You could get away with giving just one a VT - probably the one without the Target Lock, but if you're going to do it you should go all in and buy one for each.